-er -ol bbb bbc bbe bbk bbl bbo bbr bcb bcc bce bck bcl bco bcr bcv be- beb bec bee bek bel beo ber bev bkb bkc bke bkk bkl bko bkr bkv blb blc ble blk bll blo blr blv bob boc boe bok bol boo bor bov brb bre brk brl bro brr brv bvb bvc bve bvk bvl bvo bvr bvv c-- cbb cbc cbe cbk cbl cbo cbr cbv ccb ccc cce cck ccl cco ccr ccv ce- ceb cec cee cek cel ceo cer cev ckb ckc cko cl- clb clc cle clk cll clo clr clv co- cob coc coe cok col coo cor cov crb crc cre crk crl cro crr crv cvb cvc cve cvk cvl cvo cvr cvv ebb ebc ebe ebk ebl ebo ebr ebv ec- ecb ecc ece eck ecl eco ecr ecv eeb eec eee eek eel eeo eer eev ekb ekc eke ekl eko ekr ekv elb elc ele elk ell elo elr elv eo- eob eoc eoe eok eol eoo eor erb erc ere erk erl ero err erv evb evc eve evl evo evr evv kbb kbc kbe kbk kbl kbo kbr kcb kcc kce kck kcl kcr ke- keb kec kee kek kel keo ker kev kkb kkc kke kkk kkl kkr kkv kl- klb klc klo klr klv kob koc koe kok kol koo kor krc krk krl kro krr krv kvb kvk kvo kvr kvv lbb lbc lbe lbk lbl lbo lbr lbv lcb lcc lce lck lcl lco lcr lcv leb lec lee lek lel leo ler lev lkb lkl lkr llb llc lle llk lll llo llr llv lob loc loe lok lol loo lor lov lrb lrc lrk lro lrr lrv lvb lvc lve lvl lvr lvv ob- obb obc obe obk obl obo obr obv oc- ocb occ ock ocl oco ocr ocv oeb oec oee oel oeo oer okb okc oke okk okl oko okr olb olc ole olk oll olo oo- oob ooc ook ool ooo oor oov or- orb orc ore ork orl oro orr orv ov- ovb ovc ove ovl ovo ovv rbb rbc rbe rbk rbl rbo rbr rcb rcc rce rcl rco rcr rcv re- reb rec ree rek rel reo rer rev rkb rkc rke rkk rko rkv rlc rle rll rlo rlr rob roc roe rok rol roo ror rov rrb rrc rrk rrl rrr rvb rvc rve rvl rvo rvr rvv v-e vbc vbk vbl vbo vbr vbv vcc vce vcl vco vcr veb vec vee vek vel veo ver vkb vl- vlb vlc vle vlk vll vlo vlv vob voc voe vok vol voo vor vov vrb vrc vre vrk vrr vvb vvc vvo vvr vvv

bbbb bbeb bblb bbrc bcbc bccc bccl bcec bcer bcor bcvo bebb bebe bebo beck beeb beek beel beer beke beko bele belk bell belo beo- beok beor berc bere berk bero berr bevo bleb blee blek bleo blkb blob bloc blok bloo blrc bobb bobe bobo boce bock boco boec boee boel boeo boer boke boko bole bolk boll bolo boob booc booe book bool boor bor- bore bork boro borr bove bovo brcb brce breb brec bree brek brel breo brer brev brkb brob broc broe brok brol broo bror brrr c-bo cbbc cbcc cbce cbcl cbcr cbec cbee cber cbkl cbko cbkr cblb cblc cbol cbre cbrl cbvb cbve cbvr ccbc cccb cccc cccl cccv ccee ccel cclc cclv ccob ccoc ccrc ccre ccrl ccvo cec- cece ceco ceeb ceec ceel ceke cel- celc cele cell celo ceol ceor cer- cerc cere cerl cero cevo ckbc ckbe ckck ckcl ckco ckcv cker ckob ckoc ckoo ckor ckrc ckvl ckvo clec clee clek cleo cler clob cloe clok cloo clor clro clrv cobb cobe cobo coce cock coco coel cok- coke coko col- colb cole colk coll colo coob cook cool cor- corb corc core cork corl coro corr cove covo crbc crcc crce crcr cre- creb crec cree creo crkc crkl crob croc croe crok crol croo cror cvcc cver cvrr e-cl ebbc ebbo ebbr ebcc ebel eber eboe ebol eboo ebor ebro ecbc ecbe eccb eccc ecce eccl ecco ecko eco- ecol ecrc ecrl ecrr ecrv eeee eeke eele eelv eeoc eerc eero ekco ekeb ekek eker el-b elbe elbo elcb elce elco elec elee elek eleo eler elev elke elko elle ello elok elro elve elvo eole eolo eore eorl erbb erbe ercc erce ereb erec erel erer erev erke erle erll erob eroc eroe erol eroo errc erre erro erve evel ever evoe evol evoo evre evvk k-lo kbbb kbbc kbbe kbbk kbbl kbbo kbbr kbcb kbce kbck kbcl kbco kbcr kbeb kbec kbee kbek kbel kbeo kber kbev kbkb kbkk kbkl kbko kbkr kbkv kblb kble kbll kblo kblr kblv kbob kboc kboe kbok kboo kbov kbrb kbrc kbre kbrk kbrl kbro kbrv kbvb kbvc kbvo kbvr kcbc kcbk kcbl kcbr kccb kccc kcck kccl kccr kccv kceb kcec kcee kcel kceo kckc kckk kckl kcko kckr kckv kclc kcle kclk kcll kclr kclv kcob kcoe kcol kcor kcrc kcro kcrr kcrv kcvk kcvl kcvo kcvr kcvv kebb kebc kebe kebr keck keco kecr keek keel keer kekb kekc keke kekl keko kele kelk kell kelo keok keol ker- kerb kerc kere kerk kerl kero kerr kerv keve kkbb kkbe kkbl kkbo kkbr kkcb kkck kkcl kkco kkcr kkkk kklb kklc kkll kklo kklv kkob kkol kkoo kkor kkov kkrb kkrc kkre kkrk kkrl kkro kkrr kkrv kkvr kkvv klbb klbc klbe klbl klcb klcc klce klck klcl klcr kleb klec klee klek kleo kler klkc klkk klkl klko klkr klkv kllb kllc klle kllk kllv klob kloc kloe klok klol kloo klor klov klrc klrk klrr klvb klve klvk klvl klvo klvv kobb kobc kobe kobk kobo kobr kocb kock koel kokb kokc koke kokk koko kokr kolb kolc kole kolk koll kolo kolr kolv koob kooc kook kool kooo koor koov korb